Expansion of Product_{n>=1} (1+x^n)^prime(n).

Terms

a(0) =1a(1) =2a(2) =4a(3) =11a(4) =23a(5) =51a(6) =107a(7) =216a(8) =430a(9) =839a(10) =1614a(11) =3046a(12) =5684a(13) =10465a(14) =19046a(15) =34321a(16) =61225a(17) =108245a(18) =189779a(19) =330093a(20) =569916a(21) =977139a(22) =1664304a(23) =2817039a(24) =4740000a(25) =7930740a(26) =13198108a(27) =21851556a(28) =36001483a(29) =59035979